Stoker mechanism.



W. C. A. HENRY.

STOKER MECHANISM.

APPLICATION FILED FEB. 26, 1913.

Patented Feb. 13, 1917.

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W. C. A. HENRY.

STOKER MECHANISM. APPLICATION HLED FEB. 26. 1913.

Patented Feb. 13, 1917.

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MECHANISM.

[LED FEB. 26. I9l3- Patented Feb. 18, 1917.

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WILLIAM C. A. HENRY, OF COLUMBUS, OHIO.

STOKER MECHANISM.

Application filed February 26, 1913.

To all whom it may concern:

Be it known that I, WILLIAM C. A. HENRY, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Stoker Mechanisms, of which the following is a specification.

The invention relates to stoker mechanism, and particularly to the driving mechanism for the underfeed stoker as employed in locomotive stokers. The invention has for its primary objects, the provision of a more positive and direct power drive for the feed members than that heretofore employed; andthe provision of a lighter and simpler operating mechanism. Certain embodiments of the invention are illustrated in preferred form in the accompanying drawings, wherein- Figure 1 is a'partial and somewhat diagrammatic plan view of the apparatus as applied to a locomotive having two underfeed troughs; Fig. 2 is a longitudinal section on the center line of the apparatus of Fig. 1; Fig. 3 is a side elevation of one of the feed plungers, and Fig. 4 is a longitudinal section through a locomotive having a modified arrangement of operating mechanism.

The firebox 1 of the locomotive is shown in section in Fig. 1 of the-drawing in order to disclose the two feed troughs 2 and 3, which feed troughs may be of any approved type, the invention involved in the present application being directed particularly to the operating means for the feeding mechanisms for the troughs, and the character of the feeding troughs themselves being im material in so far'as the present invention is concerned.

The feeding to the ends of the troughs 2 and 3 is accomplished by means of the plunout as indicated in dotted lines in Fig. 1, in

Specificationof Letters Patent.

Patented Feb. 13, 1917. Serial No. 750,802.

order to reduce their weight, and the Walls are further provided with the transverse slots 7' (Fig. 3) to receive the operating levers 8 and 9, the inner ends of such levers 8 and 9 being pivoted together in the crosshead 10 (Fig. 2) by means of the pin 11. The outer ends of the levers 8 and 9 are fulcrumed upon the links 12 and 13, the purpose in using the links 12 and 13 being to permit of a slight endwise movement of the levers 8 and 9. The levers 8 and 9 are also secured to the plungers 4 and 5 so as to permit of a slight endwise movement of the levers through the plungers by means of the links 14 and 15 (Fig. 1).

The cross head 10 is guided in the casting 16 (Fig. 2) carried by the engine frame, which casting also carries the steam cylinder 17. This steam cylinder is provided with a piston 18. carrying a piston rod 19, the front end of which is secured to the crosshead 10. It will be seen that the apparatus as above described is simple and positive, and that the arrangement is such that there is no binding of the parts, the use of the links 12 and 13, and 14 and 15, permitting of the necessary endwise movement of the levers 8 and 9, incident to the fact that the levers 8 and 9 move on arcs instead of in absolutely right lines.

Fig. 4 illustrates an alternative arrangement of the apparatus. In this apparatus the operating steam cylinder the rear of the firebox 1, instead of to the front thereof, such cylinder, and the guide 21 for the crosshead being the engine frame 22. A connecting rod 23 is'employed, which connecting rod is pivoted to the crosshead 24 at one end, and at the other end is pivoted to a second crosshead 25 working in the guide 26. This crosshead 25 carries a pin 11 corresponding to the pin 11 in the first type of apparatus, and to this pin are pivoted the levers 8 and 9, corresponding in all respects to the levers 8 and 9 in the first form of apparatus. In other words, the apparatusof Fig. 4 is substantially the same in all respects as that of Figs. 1 and 2, with the exception that the location of the steam cylinder 20 is changed as indicated in Fig. 4.

I claim:

1. In combination with a firebox provided with a pair of underfeed troughs, a pair of feed plungers for feeding fuel into the troughs, a crosshead guided for right mounted upon 20 is placed to line movement intermediate the plungers and working longitudinally thereof, an engine intermediate the plungers for reciprocating the crosshead, operating levers for the plungers pivoted at their inner ends to the crosshead, and a fulcrum for the outer end of each lever, the levers being secured intermediate their ends to the plungers.

2. In combination with a firebox provided with an underfeed trough, a feed plunger mounted for reciprocation at the end of the trough, a crosshead at one side of the trough, an engine in alinement with the crosshead for operating such crosshead, a lever pivoted at its inner end to the crosshead and pivoted intermediate its ends to the plunger, and a pivoted fulcrum link to which the outer end of the lever is pivoted.

3. In combination with a firebox provided with a pair of underfeed troughs, a pair of feed plungers for feeding fuel into the troughs, an engine intermediate the plungers provided with a piston, a pair of transversely extending levers pivoted together at their such ends for right line movement parallel to the path of movement of the plungers, connections for reciprocating such inner ends from the piston, connections from the levers to the plungers, and means for fulcruming the outer ends of the levers.

4:. In combination with a firebox provided with a pair of underfeed troughs, a pair of feed plungers for feeding fuel into the troughs, an engine intermediate the plungers provided with a piston, a pair of transversely extending levers pivoted together at their inner ends, connections for reciprocating such inner ends from the piston, connections from the levers to the plungers, and means for fulcruming the outer epds of the levers so as to permit an endwise movement thereof.

5. In combination with a firebox provided with a pair of underfeed troughs, a

Copies of this patent may be obtained for five cents each, by addressing the inner ends and guided atv pair of feed plungers for feeding fuel into the troughs, an engine intermediate the plungers provided with a piston, a pair of transversely extending levers pivoted together at their inner ends, connections for reciprocating such innerends from the piston, connections from the levers to the plungers, and links for fulcruming the outer ends of the levers mounted for transverse oscillation.

6. In combination with a firebox provided with a pair of underfeed troughs, a pair of feed plungers for feeding fuel into. the troughs, an engine intermediate the plungers provided with a piston, a pairof transversely extending levers pivoted together at their inner ends, and guided at such ends for right line movement parallel to the path of movement of the plungers, connections for reciprocating said ends from the piston, link connections between the levers and the plungers, and means for pivotally supporting the outer ends of the levers.

7. In combination with a firebox provided with a' pair of underfeed troughs, a pair of feed plungers for feeding fuel into the troughs, an engine intermediate the plungers provided with a piston, a pair of transversely extending levers pivoted to gether at their inner ends, a crosshead in alinement with the piston and secured thereto and to the said inner ends of the plungers,

connections from the levers to the plungers permitting endwise movement of the levers with respect to the plungers, and pivotal supports for the outer ends of the levers permitting endwise movement of the levers.

In testimony whereof I have hereunto signed my name in the presence of the two subscribed witnesses.

WILLIAM G. A. HENRY.

Witnesses:

Ln'rrrm A. MYERS, ARc woR'rH MARTIN.

Commissioner of Patents,

Washington, 1). G. 

